Nail driver



May 7, 1940.

FIG.3

J. 'FLEISCHMAN NAIL DRIVER Filed March 3l, 1939 f/l//ll/ lr.; I v "Mill/l0 JOHN FLEISOHMAN Suucntor /lwik dtforucu Paand May 7, A1940 UNITEDI STATES PATENT ori-lcs l NAIL Dmvnn John Fleischman, niontown, Wash. I Application March 31, 1939, Serial No. 265,259

'2Claims.

in cabinet building to more accurately assist them in nailing without scarring the materials.

Another object of vmy invention is the provision of a device which will hold a nail to be driven and at the same time protect the surface through which the nail .is to be pressed.

A further object o'f the invention is lthe provision. of a nail-driving device which consists of relatively few parts, is simple of construction, and will stand extremely rough usage for a long period of time. I

A still further object of my invention is to provide adapting means whereby the device can be adapted to the form or slope of various surfaces to be worked upon.v

Another and further object of the invention is also to provide. adapting means whereby the device may be used in extremelyv tight places without the necessity of the customary hand hammer, thereby being a self-striking nail driver;

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawing, forming a part of this specification, and in'which like numerals are employed to designate like parts throughout the same:

lFigure 1 is a view in elevation of the nail driver of my invention showing adapted thereto an integral striker -unit and Figure 1A is a slightly enlarged detail showing the manner in whichl the striker unit is attached to the device oi Figure 1.

Figure 2 illustrates the nail driver of my invention in operative position, as for nailing iioor, sheathing, or ceiling material.

Figure 3 is a longitudinal sectional view .through-the device'of my invention.

Referring to Figure 3 my device is shown as having a grip shank I which has an interior central bore 2 that tapers at 3 to form the striker bore I. The lower end of the shank I is provided` v with a threaded boss 5. A nail retainer ball 8 is seated in an opening I a means of a spring 8.

secured in place in the shank by the screw 9. Slidably mounted, within the bores 2 and 4', is an operating plunger d held under tension by e spring and ball are I0 having a'striker rod Il at its lower end. The outside diameter of the plunger I0 is substantially that of the bore 2 and the diameter of the rod Il is substantially that of the bore 4. One side of the rod. I0 is flattened at I 2 and a friction button I3 is tensioned thereupon by means of the spring I 4 which is held in position in the socket I5 by the screw I6. A striker head I'I is supported upon the upper end of the rod I Il by means of its engagement with a threaded bossl I8 formed on the rod I0. A set screw I9 securely locks the head against displacement.

-A V-shaped head 20 having an interiorly threaded collar 2i engages the threaded boss 5 and is securely locked by means of the set screw 22. A central opening 23 registers with the bore 4 to permit the insertion of a nail into the interior of the shank I. The head 20 is indicated in Figure 2 to be V-shaped and gradually curves at each end to present a. graceful appearance. At one end a claw 2l is formed in the V-edge and at the opposite end the inner surface of the V, at 25, is ground down to serve in lifting nails whichmay be bent over and embedded in the wood.

As shown in Figure 1 an auxiliary striker head 26 having interior threads 21 and a set screw 28 is fashioned on the lower end of a rod 29. A stop head 30 is provided at the opposite end of the rod and a striker member 3| operates slidably upon they rod between theheads and makes. the device a self-driving nail set.

In nailing flooring of the tongue and groove type as shown in Figure 2, the V-head 20 is brought to rest at the juncture of the edge-tongue with a body of the flooring or ceiling material and through the use of a hand hammer I2 a nail such as Il is driven at a suitable angle through the iinished ooring 24 into the sub-ooz-ing 35.

In operation the plunger Ill is withdrawn from the' bore 2, the limit permitted by the friction button la abutting tneshomder 4s ai the end of' the flattened surface I2. The mechanic using the device inserts a nail. usually of the finish type into the opening 23 of the V-shapedhead 2Il.

The nail is frictionally engaged by the springpressed retainer button Q and held lightlybut securely against dislodgement.4

In nailing flooring the mechanic uses a hand direct forceful blows.

When the-plunger I0 has travelledA downwardly into the bore 2 so that the head- I 'I or 2 6, as the -case may be, abuts the upper 4face of the shank I,

the nail will be seated just below the surface of the wood into which it is driven. The lplunger may have circumferential gauge marks to indicate the relative position of the nail head, or spacer disks may be secured around the plunger I and under the head I1 to regulate the travel thereof.

In attaching the auxiliary striker head 26 the operator loosens the set screw I9 and unthreads the head I1 from the plunger I0. The head 26 is then threaded on the boss I8 and securely locked by means of the set-screw 28. By graspeters, the larger bore being located in the upper portion of said shank, and a threaded boss on the lower extremity of said shank; a slidable striker rod having portions adapted to t said interior bores, the larger of said portions being flattened along one side, and a striker head threadably secured upon the upper end of the striker rod; friction means in said shank operable upon the attened portion of the striker rod and comprising a frictionbutton supported in a socket in said 4shank permitting slidable engagement with the rod, a screw threaded in said socket and a spring between said vbutton and said screw for tensioning the button; nail retaining means adjacent the lower end of said shank comprising a retainer ball seated in an opening therein, a screw in the outer end of said opening and a spring between said screw vand'said ball; a V-shaped detachable surface-contacting head adapted to lit into angular junctures of th vmaterial being nailed and having an opening registering with the bore of the shank, and a threaded collar on said head for engagement over theboss on the shank. 2. In a nail driver, the combination of a grip shank having interior bores of different diameters, the larger bore being located in the upper` along one side, and a striker head threadably secured upon the upper end .of the striker rod; friction means in said shank operable upon the flattened portion of thestriker rod and comprising a friction button supported in a socketv in said shank permitting slidable engagement with the rod, a screw threaded in said socket and a. spring between said button and said screw for tensioning the button; an extension rod on said striker head and having outward stop means, a slidable striker member on said rod for cooperation with the striker head in driving nails, nail retaining means adjacent the lower end of said shank comprising a retainer ball seated in an opening therein, a screw in the outer end of said opening and a spring between said screw and said ball; a V- shaped detachable Y surface-contacting head adapted to t into angular junctures of the material being nailed and having an opening registering with the bore of the shank, and a threaded collar cn said head for engagement over the boss on the shank.

JOI-IN FLEISCHMAN. 

